[Hai-users] thermostat control problem...again...

[Sieber, Ernie]

Joseph,

You can confirm whether there is a hardware problem on the controller related to the output chip:

1. Remove all of the tstat wiring from Output 8, Ground, and Zone 16 "+".
2. Using a multi-meter (preferably a digital unit set to DC scale), measure the voltage between Output 8 and Ground.  What you should see is an oscillating voltage, ranging from 0.1 - 9+ VDC.  If you see a "constant" voltage or no voltage, the output chip has failed again.

If the chip is bad, that is going to be a problem.  HAI no longer performs repairs on the older Omni series of controllers.
 
 
Ernie

-----Original Message-----
From: hai-users-bounces at tssi.com [mailto:hai-users-bounces at tssi.com] On Behalf Of Joseph Vossen
Sent: Friday, May 07, 2010 10:30 AM
To: hai-users
Subject: [Hai-users] thermostat control problem...again...

Back in November, I was having an issue with controlling my thermostats; a copy of the email is below describes the problem.

After gathering some info from folks, I decided to replace the "Output Controller Chip" that is located at U31.  This seemed to have solved the problem...until early this week.

I am now having the same problem as before.  At this point I have:

1.  power-cycled the system
2.  reseated the chip
3.  reloaded the configuration
4.  triple-checked all of the wiring, esp the connections to/from the tstats
5.  shot the board with circuit board cleaner (which has the side-effect of cooling it down to chk if heat related)

and still no love...

I'm kind of at the end of any ideas, so I think I left with:

1.  Pull the board out and send to HAI for repair (do they do that?  is it worth doing?  turnaround?)
2.  Get another OmniPro board from flea-bay and swap it out
3.  upgrade ($$$)

any one have any suggestions/thoughts on what I can try next?

thanks

Begin forwarded message:

> From: Joseph Vossen <jkv at vossen.org>
> Date: November 13, 2009 7:45:42 AM EST
> To: hai-users <hai-users at tssi.com>
> Subject: [Hai-users] thermostat control problem
> 
> I have an OmniPro in my home which was installed around 1998; it is running f/w 1.9.  I also have nine (9) thermostats (RC-80) and one (1) outdoor temperature sensor connected.
> 
> Last night I was looking at one of the thermostats and noticed that the outdoor temperature was not being displayed; this was true for all nine (9) thermostats.
> 
> Further investigation shows:
> 
> - changing the state of a thermostat (all nine) locally (mode, setpoint) does *not* get reflected back at the panel when viewing the status using a keypad
> 
> - changing the state of a thermostat (all nine) from a keypad (mode, setpoint) does *not* affect the thermostat.
> 
> - outdoor temperature sensor appears to be communicating the correct value, as display on a keypad
> 
> - all thermostats seem to function fine as a "thermostat" (so the heat is coming on correctly)
> 
> - room temperature, as displayed on a thermostat (all nine), appears to be correct
> 
> I have power-cycled the panel and all of the thermostats but I see the same behavior.  I just appears that *all* of the thermostats have simply stopped communicating with the panel.
> 
> suggestions?
> 
> thanks
> 
> _______________________________________________
> HAI-users mailing list
> HAI-users at tssi.com
> http://romaine.tssi.com/mailman/listinfo/hai-users


_______________________________________________
HAI-users mailing list
HAI-users at tssi.com
http://romaine.tssi.com/mailman/listinfo/hai-users